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Spring @Transactional - isolation, propagation
...nce characteristics in a multi-threaded application. I think if you understand the dirty reads concept you will be able to select a good option.
Example of when a dirty read can occur:
thread 1 thread 2
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write(x) |
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| read(x)
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Removing a list of characters in string
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If you're using python2 and your inputs are strings (not unicodes), the absolutely best method is str.translate:
>>> chars_to_remove = ['.', '!', '?']
>>> subj = 'A.B!C?'
>>> subj.translate(None, ''.join(chars_to_remove))...
How do I set the proxy to be used by the JVM
...e Internet. The most common example happens when it is reading an XML file and needs to download its schema.
19 Answers
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How to read a file without newlines?
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You can read the whole file and split lines using str.splitlines:
temp = file.read().splitlines()
Or you can strip the newline by hand:
temp = [line[:-1] for line in file]
Note: this last solution only works if the file ends with a newline, otherw...
Replace non-numeric with empty string
... This is only used a couple of times, so we don't need to create a class, and as far as the leading 1, not a bad idea. But I think I'd rather handle that on a case by case basis, at least in this project. Thanks again -- if I could upvote again, I would.
– Matt Dawdy
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How to export and import a .sql file from command line with options? [duplicate]
... Duplicate! looking for some feature have phpmyadmin during export in command line
8 Answers
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Why isn't my Pandas 'apply' function referencing multiple columns working? [closed]
I have some problems with the Pandas apply function, when using multiple columns with the following dataframe
6 Answers
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Why / when would it be appropriate to override ToString?
I'm studying C# and I wonder what the point and benefit of overriding ToString might be, as shown in the example below.
1...
How can I add to List
...lowed in that List. The only "guarantee" is that you can only read from it and you'll get a T or subclass of T.
The reverse logic applies to super, e.g. List<? super T>. These are legal:
List<? super Number> foo3 = new ArrayList<Number>; // Number is a "super" of Number
List<?...
Templated check for the existence of a class member function?
...:value << std::endl;
return 0;
}
I've just tested it with Linux and gcc 4.1/4.3. I don't know if it's portable to other platforms running different compilers.
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